package com.qf.stu.application.config;

import com.alibaba.cloud.nacos.NacosDiscoveryProperties;
import com.alibaba.cloud.nacos.loadbalancer.NacosLoadBalancer;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.loadbalancer.core.ReactorLoadBalancer;
import org.springframework.cloud.loadbalancer.core.ServiceInstanceListSupplier;
import org.springframework.cloud.loadbalancer.support.LoadBalancerClientFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.core.env.Environment;

/**
 * 负载均衡算法的配置类
 */
public class LoadBalanceConfig {

    /**
     * 配置基于Nacos的权重负载均衡策略
     */
    @Bean
    public ReactorLoadBalancer<ServiceInstance> randomLoadBalancer(Environment environment,
                                                                   LoadBalancerClientFactory loadBalancerClientFactory,
                                                                   NacosDiscoveryProperties nacosDiscoveryProperties) {
        String name = environment.getProperty(LoadBalancerClientFactory.PROPERTY_NAME);

        //Nacos负载均衡算法
        return new NacosLoadBalancer(loadBalancerClientFactory
                .getLazyProvider(name, ServiceInstanceListSupplier.class),
                name, nacosDiscoveryProperties);

        //随机负载均衡算法
//        return new RandomLoadBalancer(loadBalancerClientFactory.getLazyProvider(name, ServiceInstanceListSupplier.class), name);
    }
}
